| Title |
Studies of Beam Dumps in Candidate Horizontal Collimator Materials for the Advanced Photon Source Upgrade Storage Ring |
| Authors |
- J.C. Dooling, W. Berg, M. Borland, G. Decker, L. Emery, K.C. Harkay, R.R. Lindberg, A.H. Lumpkin, G. Navrotski, V. Sajaev, Y.P. Sun, K.P. Wootton, A. Xiao
ANL, Lemont, Illinois, USA
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| Abstract |
We present the results of experiments intended to show the effects of beam dumps on candidate collimator materials for the Advanced Photon Source Upgrade (APS-U) storage ring (SR). Due to small transverse electron beam sizes, whole beam loss events are expected to yield dose levels in excess of 10 MGy in beam-facing components, pushing irradiated regions into a hydrodynamic regime. Whole beam aborts have characteristic time scales ranging from 100s of ps to 10s of microseconds which are either much shorter than or roughly equal to thermal diffusion times. Aluminum and titanium alloy test pieces are each exposed to a series of beam aborts of varying fill pattern and charge. Simulations suggest the high energy/power densities are likely to lead to phase transitions and damage in any material initially encountered by the beam. We describe measurements used to characterize the beam aborts and compare the results with those from the static particle-matter interaction code, MARS; we also plan to explore wakefield effects. Beam dynamics modeling, done with elegant is discussed in a companion paper at this conference. The goal of this work is to guide the design of APS-U SR collimators.
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| Funding |
Work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357 |
| Paper |
download MOPLM14.PDF [3.113 MB / 4 pages] |
| Export |
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| Conference |
NAPAC2019 |
| Series |
North American Particle Accelerator Conference (4th) |
| Location |
Lansing, MI, USA |
| Date |
01-06 September 2019 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Yoshishige Yamazaki (MSU, East-Lansing, MI, USA); Tor Raubenheimer (SLAC, Stanford, CA, USA); Amy McCausey (FRIB, East-Lansing, MI, USA); Volker RW Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-223-3 |
| Online ISSN |
2673-7000 |
| Received |
27 August 2019 |
| Accepted |
04 September 2019 |
| Issue Date |
08 October 2019 |
| DOI |
doi:10.18429/JACoW-NAPAC2019-MOPLM14 |
| Pages |
128-131 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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